77559966975986 has 32 divisors (see below), whose sum is σ = 127774337760000. Its totient is φ = 35016212404480.

The previous prime is 77559966975971. The next prime is 77559966976003. The reversal of 77559966975986 is 68957966995577.

It is a junction number, because it is equal to n+sod(n) for n = 77559966975892 and 77559966975901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67775591 + ... + 68910453.

It is an arithmetic number, because the mean of its divisors is an integer number (3992948055000).

Almost surely, 2^{77559966975986} is an apocalyptic number.

77559966975986 is a deficient number, since it is larger than the sum of its proper divisors (50214370784014).

77559966975986 is a wasteful number, since it uses less digits than its factorization.

77559966975986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155874.

The product of its digits is 486091368000, while the sum is 98.

The spelling of 77559966975986 in words is "seventy-seven trillion, five hundred fifty-nine billion, nine hundred sixty-six million, nine hundred seventy-five thousand, nine hundred eighty-six".